Sewing-machine



(No Model.) 2 Sheets-Sheet 1. T. TULLY.

SEWING MAGHINB.

No. 268,152. Patented Nov. 28, 1882.

WITNESSBS INVENTOR MfM-M. JZ@ A Y I @({yw f f /TTORNBYS N. FUER; Phmvmhowphu. wammgm. n. c.

(No Model.) 2 Sheets-Sheet 2.

T.v TULLY.

SEWING MACHINE. No. 268,152. Patented N0v.'28, 1882.

WIBSES D j INVBNTOR N4 PETERS. HwwLnlmgnphu. wnmngbn. D.C.

UNITED STATES PATENT OFFICE.

THOMAS TULLY, OF CLEVELAND, OHIO, ASSIGNOR, BY DIRECT AND MESNE ASSIGNMENTS, TO JOHN CROWELL, JR., AND-G. WALTER SHUMVAY,

BOTH OF GLENVILLE, OHIO.

SEWING-MACHINE.

SPECIFICATION forming part of Letters Fatent No. 268,152, dated November 28, 1882,v Application filed August 10, 1885!. (No model.)

i and it consists in the parts and combination of parts, as will be hereinafter fully set forth and claimed.

Inthedrawings,Figure1 is an isometric view of a sewing-machine embodying my invention. Figs. 2 and 3 are views in front elevation of my machine.,showing the parts'in different positions. Fig. 4 is a View in rear elevation of my machine, showing the manner of operating the reciprocating needle-arm. Fig. 5 is a plan view, looking down upon the feed and looper of my machine. Fig. 6 is a detached View of a portion of my machine, showing more clearly the construction and operation ot' my thread-guide. Fig. 7 is a plan view ofthe bottom of plate H, showing the spring threadguide.

A is the bed of my machine.

B is the driving-shaft, which is journaled in suitable bearings extending from the bed A. This shaft is provided at its rear end with an eccentric, O, and at its forward end with a crank-wheel, D.

E is the needle-arm of my machine, which is pvoted at a tothe upright E. This arm E is operated by means of the eccentric G and yoke F, the arm b of which extends upward from said yoke F, being pivotally connected to the rear end of the arm E at b', (see Fig. 4,) and a short arm, c, which extends downward from the yoke F, passing througha hole in the hedplate A, as shown in Fig. 4r. This construction prevents the yoke from slipping oft of the eccentric and allows of a cheaply-constructed eccentric being used, ohviating the use ot' ianges or guides thereon, which would otherwise be necessary, and thereby make it more costly.

Gr is the presser-foot arm, which is permanently secured to the bed A, extending upward therefrom for a short distance, and then run- 5o ning parallel to it or horizont-al, as shown in Fig. 1. The arm Cr acts to support the presserfoot G.

H is a shelf or plate, which extends forward from the bed A and above the forward end of the shaft B.

I is a bar, which is supported under the plate H in such a manner as to allow ot' its being reciprocated horizontally.

Secured to the bar I is a looper, J, which is so 6o located that as it is reciprocated it will pass in front of the needle and between it and the thread (this being done when the needle has passed downward to its lowest point) and retain the thread until the needle has again passed upward. The bar I is driven or reciproeated by means of the crank-wheel D, it being connected thereto by the short pitman K.

Secured to the short pitman K are two upwardly-curved and sharp-pointed arms ej", 7o which act as a feed to move the goods along. These arms f have thesame movement as that end of the pitman K which is attached to the crank-wheel D. vThis movement is such as to raise the arms ef, `and thus bring them' 75 in contact with the goods, then move them to the left, (see Fig. 3,) and with them the goods. The arms @fare then lowered andmoved to the right. This movement is gone throughat each revolution of the crank-wheel D. 8o

L is a thread-guide, (see Figs and 7,) which consists of a spring flattened at its point and inclined to an angle, so that as the needle passes through the plate H at the hole M it will strike this spring on its flattened surface, presented as it is at an angle to the course ot' the needle. From this contact with the needle it is forced slightly to one side, and is held in that position by the needle during its downward stroke. Upon the upward stroke the 9o loop is retained by the looper J until the latter passes free from the loop. The spring L, being free, carries the loop to the opposite side by this return motion of the spring L, so that the ioop is presented at an angle, so that at the next downward stroke the needle passes through the loop, thus forming a chain-stitch.

M is a spool-tension, the construction of which is old. It consists of two cones-one above and the other below thespool-and a binding-nut and spring, as shown. This acts to keepthe thread at a proper tension, which may be either increased or diminished, as desired.

The operation of my machine is as follows: The goods to be sewed is placed beneath the presser-foot and the machine started. As the needle is driven downward the bar I and the looper J are moved to the left, as shown in Fig. 3. Now, when the needle has reached its lowest Vpoint and has started on its upward stroke the crank-wheel D acts,through the pitnian K, to move the bar I and looper J to the right, (see Fig. 2,) thus causing the point ot' the looper J to pass between the thread and .needle and retain the thread while the needle is passing upward. This acts to form a loop. When the needle has raised to a point above the goods the arms @fof the feeder are in such a position as to come in contact with the nnder side of the goods, and, being operated by the crank-wheel D, as hereinbefore described, act to feed or move the goods to the left. As the feeder @fis being moved to the left, so also is. the looperJ, which is attached to the bar l. This leaves the loop free to be drawn along by the cloth. Now, as the cloth is moved to the left and drawn with it (the loop) the direction ot' the said loop is changed to nearly a horizontal by the guide L, (see Fig. 6,) thus leaving the loop in position to allow otl the needle on its downward stroke to pass through and form the chain-stitch.

What I claim is- 1l. In a sewing-machine, the combination, with a crank-wheel, of a pitman connected thereto, said pitman being provided with devices for engaging and feeding the goods to be sewed, substantially as set forth.

2. In a sewing-machine, the combination, with a looper and crank-wheel and pitman for operating the looper, ot a thread-guide adapted to be actuated by the needle and allow the latter to pass through the loop on its downstroke, substantially as set forth.

3. In a sewing-machine, a driving-shaft pro- `Vided on one end with means for operating a vibrating arm and at its other end with means for operating a pitman, said pitman in turn operating both the feed and looper, substantially as set forth.

4. In a sewing-machine, the combination, with a driving-shaft provided with a crank, a sliding bar, and a pitman, of' curved arms rigidly secured to the pitman and adapted to enl .ed with an inclined free end arranged and THOMAS TULLY.

Witnesses:

W. E. DoNNELLY, ALBERT E. LYNCH. 

